All features seem to be working as advertized and over all I am please with the unit. However, there is one issue that I am dealing with it right now. Backlight for all function keys do not get illuminate when I turn the head lights on. They do briefly come on when I 1st start the unit, but goes off few seconds later and stay off even if I turn on my head lights.

I asked the installer and he replied the unit install should be plug_and_play and he is not sure why it is not working and why he needs to make changes to harness to make it work. Does anyone have any idea how to trouble shot and fix this? I called Myron&Davis tech support, they told me that I might need to jump or by pass some wires from the harness to troubleshoot this.

Does anyone had that issue and/or know the fix, if so, please share it. Thanks in advance.

Do a search on this website on head units.. there are some threads on the wireing harness and what the different wires go to. Junbug may be able to help, I think he posted some somewhere. Once you figure that out, it should not be too hard to get the right wires hooked up.. You have a 2007 Limited so I would think the wireing harness should match. You could send the wireing diagram to M&D and ask them why it doesn't work.

Do a search on this website on head units.. there are some threads on the wireing harness and what the different wires go to. Junbug may be able to help, I think he posted some somewhere. Once you figure that out, it should not be too hard to get the right wires hooked up.. You have a 2007 Limited so I would think the wireing harness should match. You could send the wireing diagram to M&D and ask them why it doesn't work.

I am going to call to M&D tech support to see if they can provide me the wiring harness diagram. My installer is not too keen nor willing to help me out and have warned me if something goes wrong to unit while he is troubleshooting the issue he will not be liable for it. I wonder what kind of professional installer he is!?!?